Linux Phone

Aeons ago I've ordered a phone. A Librem Phone. Librem5 to be precise. It was all well forgotten history when all of a sudden last spring I got notification it has been delayed.

After that glorious event I've started monitoring the progress of the almost finishing development with greater interest which also led me to know there appered to be another project promising to deliver mainline linux phone in about half a year. The price tag was ridiculously low (comparing to L5) so I just gave it a shot - just in case.

Now last week you can imagine the degree of my bewilderment when I've received sealed envelop stating the customs office awaits for my decision on how to proceed with some electronic shipment to me, which clearly need tax clearance (if I want to proceed with the shipment).

PS3 BD BT Remote

Once upon a time I've made XBMC based HTPC... And as any proper HTPC mine should also have a remote control.

Since my TV is Sony, the choice was obvious - Sony PS3 BD BT Remote - both remotes are almost the same which makes HTPC looks aesthetic.

Then however I've realised that despite being recognized as a generic HID keyboard, keys mapped to buttons aren't seen by Xorg (XInput to be precise). Second issue i found was related to battery power. Don't know how PS3 is properly handling it but I solved the problem by suspending the HID via explicit teardown of BT link.

In continuation to this

DLV is gone. mobi zone is not yet signed. What to do? Wait and be prepared

Small footprint web server

Nowdays we're all concerned about environment and our impact on it. At the same time security concerns do not allow our conscience to agree on these cloud bells and whistles.

Luckily we have now available at the consumer segment low profile and power consumption platforms like Raspberry PI and others. Compare 1-2W of raspberry to at least 10-20W of any other HTPC. Such platforms however have certain resource restrictions.

PS3 BD BT Remote on Bluez5

Being tired of background noise caused by active cooling on HTPC, moved it off to Raspberry PI (B+).

As time moves forward there appears plethora of mobile apps for any platform doing convenient remote control of Kodi and its library. Hence I've actually stopped using PS3 BD BT remote.

Nevertheless recently decided to dust it off and connect again (using BT dongle on RPI)

IPSec with DNSSEC v2

Back to our business. On 11 Oct a patch to enable DNSSEC protected DANE CERTs was merged to StrongSWAN's upstream so now you can have interoperability between racoon and strongswan if you need to use CERTs for easy deployment.

The approach is pretty the same, only with StrongSWAN you have additional DNSSEC validation (racoon blindly trusts underlying DNSSEC implementation).

BlueZ 5

Life goes on, everythng changes. With new bluez tree fakehid was completely wiped out from bluetoothd userspace. Now, thanks to David Dillow ps3bt code lives in HID kernel code since commit 5844c1cdb630b537a2ecdf74dab2985e51dc1bd9. Let see how it works...

IPSec with DNSSEC

Since future has come, we need to pace ahead and utilize its merits. One of the benefits of having DNSSEC is independence in making own certs (with DANE) and simplified roll-out of those certs (with CERT RR).

PulseAudio - Connecting the fridge

Granted the fridge has audio components of course...

Now, once we have our audio bus on Jack's shoulders, we can read more good ideas on how to live in this changing world.

Package cleanup: tiny hints

If you use some system for long enough, passing through various release upgrades, installing and uninstalling packages - basically living and using - your system might start be bloated with various remnants of dependencies, unneeded packages, dragging back some relicts or even blocking some new deps. Very unpleasant fact.

GPT - doing things right

To be honest - I'm absolutely not an authority to teach how to do things right in GUID Partition Table. But I did it wrong, and I corrected it, so maybe someone will find it useful.

Glibc IPv6 bug

While working on jack IPv6 network stack I've trapped onto bizarre getaddrinfo() behaviour - it was returning me address families in wrong order for passive nameless request. It appears people were trapping onto this bug since 2009 (at least that far I found references to this behaviour in mail-lists).

System Jack Service

What if we want to set jack to be system service? I know, I know, I read all the fine manuals and a reason behind avoiding system sound daemon, whether it is pulse or jack. But hey - this is my PC, don't tell me what I cannot do!

Multicast

In such a small setup something like pim or mospf is just too much, however i found that igmpproxy is just too little for me. So I'm using smcroute. This daemon is for static multicast routing which is just what I need for my single-router home setup. One minor issue though - startup for this piece of software is really poor.

QoS

Quality of service may be not as critical part of home network as connectivity and security, however could really help of you're using some realtime services like VoIP

The same approach is used here for QoS setup, script below simply applies predifened set of tc rules:

Network device without IPv6? Nonsense, I tell you. Look which year it is. If your ISP is retarded - keep the pace with

IPv6 Tunnel Broker

ifupdown and dhclient for ipv6

If you're using dhcp for both ipv4 and ipv6 on ubuntu with wifi/wpa_supplicant you might have faced with weird issue with ifdown trying to release v6 (or v4, depends on ordering) lease and it finally hangs - since previous address family already brought interface down.

JACK

Once upon a time I've made XBMC based HTPC... oh, sorry, you know that story, do you?

Well, next thing I found was that pulseaudio was not working (it is really poorly documented, and that time I didn't have a clue how to deal with it). So I removed pulse leaving XBMC on pure ALSA. Which was working perfectly till it became too limited for me and my audio preferences. This was a time I got acquainted with JACK.

Now I can handle easily and conveniently pulseaudio, after breaking my head through scattered across the internet information, but it is the subject for another story. Because first we need to bind together XBMC and JACK using...

Firewall

Well, you know my attitude to the wierd "complex" stuff guys are tending to make from pure, clean and perfect by itself iptables rules. I really can't get it. So here it is.

Upstart

Here I'm just listing some upstart scripts I've written to manage tasks not assumed by default configuration

iptables

I dont want to use some weird bloatware just to install couple of rules I need to protect my machine. So here we go...